Products / APOC Weather Armor SB-1 Self-Bond Roof Underlayment

APOC Weather Armor SB-1 Self-Bond is a self-adhered, reinforced rubberized roof underlayment and leak barrier with a non-skid mineral finish, for use under shingle, slate, wood shake and other steep-slope roofing. Its technical data sheet lists 36-inch by 66.7-foot rolls covering approximately 2 squares, a 60-mil thickness and properties tested under ASTM D1970, a vapor permeability of 0.05 perms, and priming with APOC 103 where needed.